Data transfer unit funtion on 4g sim router of E-Lins

4g sim router of E-Lins can supports DTU (Data transfer unit) function. E-Lins industrial router can supports RS232 or RS485 and Terminal block or DB9 port.

DTU(Data Transfer unit), in simple terms, is a serial port terminal, used for the Data between the serial port and IP conversion. Industrial serial port terminals mainly include 4G/NB wireless data terminal, Ethernet serial port terminal, serial port to wifi terminal, etc. The device provides serial port to network function, which can convert RS232/485/422 serial port into TCP/IP network interface. Realize the transparent bidirectional data transmission between RS-232/485/422 serial port and TCP/IP network interface. The serial port equipment can immediately have TCP/IP network interface function, connect to the network for data communication, greatly expand the communication distance of serial port equipment, products are widely used in power, environmental monitoring, vehicle, water conservancy, weather, street monitoring, heat pipe network, coal mine, oil field and other industries.

Basic functions of DTU

Dtus acquire data through interfaces to terminal devices, and then transmit it wirelessly to designated data centers or devices through the carrier's cellular network. At the same time, the data center can send data or instructions to the DTU over the carrier network, and then the DTU sends the data to the terminal device through the interface.

(1) Integration of TCP/IP protocol stack

The TCP/IP stack (the sum of a series of network protocols) is the core backbone of network communication, defining how electronic devices access the network and how data is transferred between them. Colloquially speaking is, a host of data to go through what process can be sent to the other host.

(2) Two-way data conversion

Converts common serial ports such as RS232, RS485, and RS422 into TCP/IP data for transmission.

(3) Supports user-defined heartbeat packets 

General DTU is designed to support permanent online, with automatic dialing on the boot and heartbeat packets and other functions, when there is no data for a long time, can also stay online.

(4) Parameter configuration

The baud rates of data center IP addresses, serial ports, and port numbers vary in different iot applications. Therefore, DTU terminals must support parameter Settings to adapt to different applications. E - Linus industrial-grade routers DTU function selection of baud rate are as follows: 300/1200/2400/4800/9600/19200/38400/57600/115200 BPS

E-lins industrial-grade 4g sim router DTU works by utilizing industrial-grade wireless cellular modules and carriers to provide the network. They use high-performance industrial-grade 32-bit communication processors and embedded operating systems. And under the synergistic action of RS232(or RS485) interface, the router is directly connected with the serial port device, so as to achieve transparent data transmission function.

DTU has been widely used in electric power, environmental protection, LED information release, logistics, hydrology, meteorology and other fields. The application scenarios are different, but they all use the same basic principles.

By communication modes, the E-LINS DTU adopts 2G/3G/4G/5G and WiFi

By interface type, E-LINS DTU supports RS-485/RS-232(DB9 or terminal block), and DI/DO(Serial port).